CVE-2022-49151

/// Technical description

In the Linux kernel, the following vulnerability has been resolved:

can: mcba_usb: properly check endpoint type

Syzbot reported warning in usb_submit_urb() which is caused by wrong

endpoint type. We should check that in endpoint is actually present to

prevent this warning.

Found pipes are now saved to struct mcba_priv and code uses them

directly instead of making pipes in place.

Fail log:

| usb 5-1: BOGUS urb xfer, pipe 3 != type 1

| WARNING: CPU: 1 PID: 49 at drivers/usb/core/urb.c:502 usb_submit_urb+0xed2/0x18a0 drivers/usb/core/urb.c:502

| Modules linked in:

| CPU: 1 PID: 49 Comm: kworker/1:2 Not tainted 5.17.0-rc6-syzkaller-00184-g38f80f42147f #0

| Hardware name: QEMU Standard PC (Q35 + ICH9, 2009), BIOS 1.14.0-2 04/01/2014

| Workqueue: usb_hub_wq hub_event

| RIP: 0010:usb_submit_urb+0xed2/0x18a0 drivers/usb/core/urb.c:502

| ...

| Call Trace:

| <TASK>

| mcba_usb_start drivers/net/can/usb/mcba_usb.c:662 [inline]

| mcba_usb_probe+0x8a3/0xc50 drivers/net/can/usb/mcba_usb.c:858

/// Remediation

Check the references section for vendor advisories, patches, and mitigation guidance. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

/// References